// JavaScript Document

$(document).ready(function(){
			  var currentPosition = 0;
			  var slideWidth = 440;
			  var slides = $('.slide');
			  var numberOfSlides = slides.length;
			
			  // Remove scrollbar in JS
			  $('#slidesContainer').css('overflow', 'hidden');
			
			  // Wrap all .slides with #slideInner div
			  slides
				.wrapAll('<div id="slideInner"></div>')
				// Float left to display horizontally, readjust .slides width
				.css({
				  'float' : 'left',
				  'width' : slideWidth
				});
			
			  // Set #slideInner width equal to total width of all slides
			  $('#slideInner').css('width', slideWidth * numberOfSlides);
			
			  // Insert controls in the DOM
			  $('#slidesContainer')
				.prepend('<span class="control" id="leftControl">links</span>')
				.append('<span class="control" id="rightControl">rechts</span>');
			
			  // Hide left arrow control on first load
			  manageControls(currentPosition);
			
			  // Create event listeners for .controls clicks
			  $('.control')
				.bind('click', function(){
				// Determine new position
				currentPosition = ($(this).attr('id')=='rightControl') ? currentPosition+1 : currentPosition-1;
				
				// Hide / show controls
				manageControls(currentPosition);
				// Move slideInner using margin-left
				$('#slideInner').animate({
				  'marginLeft' : slideWidth*(-currentPosition)
				});
			  });
			
			  // manageControls: Hides and Shows controls depending on currentPosition
			  function manageControls(position){
				// Hide left arrow if position is first slide
				if(position==0){ $('#leftControl').hide() } else{ $('#leftControl').show() }
				// Hide right arrow if position is last slide
				if(position==numberOfSlides-1){ $('#rightControl').hide() } else{ $('#rightControl').show() }
			  }	
			});